Blue Box SIGMA 2002 - Page 4

Blue Box
4. INSTALLATION 26
4.1 CLEARANCES 26
4.2 ANTI-VIBRATION ISOLATORS (option) 26
4.2.1 Rubber Anti-Vibration Isolators 26
4.3 WATER PIPING CONNECTIONS 27
4.4 EVAPORATOR WATER PIPE CONNECTIONS 29
4.5 CONDENSER WATER PIPE CONNECTIONS 30
4.5.1 Pressostatic valve 30
4.5.2 3 way valve 31
4.6 DESUPERHEATER HYDRAULIC CONNECTIONS (optional) 32
4.7 HEAT RECOVERY EXCHANGER HYDRAULIC CONNECTIONS (Version /DC) 32
4.8 WATER FLOW SWITCH INSTALLATION INSTRUCTIONS 34
4.9 CONNECTIONS FOR VERSION LE (MOTOCONDENSING) AND LC (MOTOEVAPORATING) 36
4.9.1 Refrigerant connections 36
4.9.2 Route of pipes and maximum distance between sections 36
4.9.3 Procedures to follow when sizing refrigerant lines 36
4.9.4 Version LE: evaporating section at lower level than condensing section: 36
4.9.5 Version LE: evaporating section positioned higher than the condensing unit section 37
TABLE 1 - EXTERNAL PIPE DIAMENTERS FOR VERSIONS LE, LE/HP 37
4.9.6 Version LC: remote condenser above the evaporating unit: 38
4.9.7 Version LC: remote air cooled condenser below the evaporating unit: 38
TABLE 2 - PIPE DIAMETER FOR VERSIONS LC 39
4.9.8 Connection of Sigma 2002 LC/HP units to a remote air cooled condenser. 39
TABLE 3 - CONNECTION PIPE EXTERNAL DIAMETERS FOR VERSIONS LC/HP 40
4.10 PRESSURE RELIEF VALVES 40
4.11 WATER QUALITY 40
4.12 LOW TEMPERATURE WATER AT CONDENSER 41
4.13 OPERATION WITH LOW TEMPERATURE CHILLED WATER AT EVAPORATOR 41
TABLE 4 - FREEZING POINT FOR WATER-ANTIFREEZE MIXTURES 41
OPERATING LIMITS 42
4.14 Water flow rate to evaporato and condenser 43
4.15 EVAPORATOR ChilleD water temperature 43
CONDENSER PRESSURE DROP 43
EVAPORATOR PRESSURE DROP 45
4.16 ELECTRICAL CONNECTIONS 46
4.16.1 General 46
4.16.2 Power supply to crankcase heaters 47
4.16.3 Potential free contacts 47
4.16.4 Flow switch electrical connections 47
4.16.5 Circulating pump electrical connections 47
4.16.6 External interlock 47
4.17 MICROPROCESSOR CONTROLLERS 47
4.17.1 Microprocessor controller for /LE and HP/LE versions 48
4.17.2 RS485 serial interface (optional) 48
5. START-UP 56
5.1 PRELIMINARY CHECKS 56
6 UNIT WITH mCHILLER MICROPROCESSOR (models from 3.2 to 13.2) 57
6.1.1 Display 57
6.1.2 Machine status information 57
6.1.3 Keypad 57
6.1.4 Control and display screens 58
6.1.5 Muting the BUZZER 58
6.1.6 ALARMS reset 58
6.1.7 Activation/deactivation of COOLING operation (summer mode) 59
6.1.8 Activation/deactivation of HEATING mode (winter mode) 59